package com.yh.gulimall.product.service.impl;

import com.alibaba.fastjson.TypeReference;
import com.yh.common.constant.ProductConstant;
import com.yh.common.to.SkuHasStockVo;
import com.yh.common.to.SkuReductionTo;
import com.yh.common.to.SpuBoundTo;
import com.yh.common.to.es.SkuEsModel;
import com.yh.common.utils.R;
import com.yh.gulimall.product.entity.*;
import com.yh.gulimall.product.feign.CouponFeignService;
import com.yh.gulimall.product.feign.SearchFeignService;
import com.yh.gulimall.product.feign.WareFeignService;
import com.yh.gulimall.product.service.*;
import com.yh.gulimall.product.vo.*;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.util.*;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.yh.common.utils.PageUtils;

import com.yh.gulimall.product.dao.SpuInfoDao;
import com.yh.common.utils.Query;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;

import javax.annotation.Resource;

@Service("spuInfoService")
public class SpuInfoServiceImpl extends ServiceImpl<SpuInfoDao, SpuInfoEntity> implements SpuInfoService {

    @Resource
    private SpuInfoDescService spuInfoDescService;

    @Resource
    private SpuImagesService spuImagesService;

    @Resource
    private AttrService attrService;

    @Resource
    private ProductAttrValueService attrValueService;

    @Resource
    private SkuInfoService skuInfoService;

    @Resource
    private SkuImagesService skuImagesService;

    @Resource
    private SkuSaleAttrValueService skuSaleAttrValueService;

    @Resource
    private BrandService brandService;

    @Resource
    private CategoryService categoryService;

    @Resource
    private CouponFeignService couponFeignService;

    @Autowired
    private WareFeignService wareFeignService;

    @Autowired
    private SearchFeignService searchFeignService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                new QueryWrapper<SpuInfoEntity>()
        );

        return new PageUtils(page);
    }

    @Transactional
    @Override
    public void saveSpuInfo(SpuSaveVo spuSaveVo) {
        //1.保存SPU基本信息 pms_spu_info
        SpuInfoEntity infoEntity = new SpuInfoEntity();
        BeanUtils.copyProperties(spuSaveVo, infoEntity);
        infoEntity.setCreateTime(new Date());
        infoEntity.setUpdateTime(new Date());
        this.savaBaseSpuInfo(infoEntity);

        //2.保存Spu的描述图片 pms_spu_info_desc
        List<String> decript = spuSaveVo.getDecript();
        SpuInfoDescEntity descEntity = new SpuInfoDescEntity();
        descEntity.setSpuId(infoEntity.getId());
        descEntity.setDecript(String.join(",", decript));
        spuInfoDescService.saveSpuInfoDesc(descEntity);

        //3.保存Spu的图片集 pms_spu_images
        List<String> images = spuSaveVo.getImages();
        spuImagesService.saveImages(infoEntity.getId(),images);

        //4.保存Spu的规格参数 pms_product_attr_value
        List<BaseAttrs> baseAttrs = spuSaveVo.getBaseAttrs();
        List<ProductAttrValueEntity> collect = baseAttrs.stream().map(attr -> {
            ProductAttrValueEntity attrValueEntity = new ProductAttrValueEntity();
            attrValueEntity.setAttrId(attr.getAttrId());
            //将属性名查过来
            AttrEntity byId = this.attrService.getById(attr.getAttrId());
            attrValueEntity.setAttrName(byId.getAttrName());
            attrValueEntity.setAttrValue(attr.getAttrValues());
            attrValueEntity.setQuickShow(attr.getShowDesc());
            attrValueEntity.setSpuId(infoEntity.getId());
            return attrValueEntity;
        }).collect(Collectors.toList());
        attrValueService.saveProductAttr(collect);

        //5.保存Spu的积分信息 gulimall_sms（跨库）-》sms_spu_bounds
        Bounds bounds = spuSaveVo.getBounds();
        SpuBoundTo spuBoundTo = new SpuBoundTo();
        BeanUtils.copyProperties(bounds, spuBoundTo);
        spuBoundTo.setSpuId(infoEntity.getId());
        R r=couponFeignService.saveBounds(spuBoundTo);
        if(r.getCode()!=0){
            log.error("远程保存spu积分信息失败");
        }

        //6.保存当前Spu对应的所有Sku信息：
        //6.1保存Sku的基本信息 pms_sku_info
        List<Skus> skus = spuSaveVo.getSkus();
        if(skus!=null&&skus.size()>0){
            skus.forEach(item->{
                //获取默认图片
                String defaultImg="";
                for (Images image : item.getImages()) {
                    if(image.getDefaultImg()==1){
                        defaultImg=image.getImgUrl();
                    }
                }

                SkuInfoEntity skuInfoEntity = new SkuInfoEntity();
                BeanUtils.copyProperties(item, skuInfoEntity);
                skuInfoEntity.setBrandId(infoEntity.getBrandId());
                skuInfoEntity.setCatalogId(infoEntity.getCatalogId());
                skuInfoEntity.setSaleCount(0L);
                skuInfoEntity.setSpuId(infoEntity.getId());
                skuInfoEntity.setSkuDefaultImg(defaultImg);
                skuInfoService.saveSkuInfo(skuInfoEntity);

                Long skuId = skuInfoEntity.getSkuId();

                //6.2保存Sku的图片信息 pms_spu_images
                List<SkuImagesEntity> imagesEntities = item.getImages().stream().map(img -> {
                    SkuImagesEntity skuImagesEntity = new SkuImagesEntity();
                    skuImagesEntity.setSkuId(skuId);
                    skuImagesEntity.setDefaultImg(img.getDefaultImg());
                    skuImagesEntity.setImgUrl(img.getImgUrl());
                    return skuImagesEntity;
                }).filter(entity->{
                    //true就是需要
                    return !StringUtils.isEmpty(entity.getImgUrl());
                }).collect(Collectors.toList());
                //TODO 没有图片路径的无需保存
                skuImagesService.saveBatch(imagesEntities);


                //6.3保存Sku的销售属性信息 pms_sku_sale_attr_value
                List<Attr> attrs = item.getAttr();
                List<SkuSaleAttrValueEntity> saleAttrs = attrs.stream().map(attr -> {
                    SkuSaleAttrValueEntity saleAttrValueEntity = new SkuSaleAttrValueEntity();
                    BeanUtils.copyProperties(attr, saleAttrValueEntity);
                    saleAttrValueEntity.setSkuId(skuId);
                    return saleAttrValueEntity;
                }).collect(Collectors.toList());
                skuSaleAttrValueService.saveBatch(saleAttrs);

                /*
                  6.4保存Sku的优惠、满减等信息；gulimall_sms（跨库）-》sms_sku_ladder\sms_sku_full_reduction
                  sms_member_price\
                */
                SkuReductionTo skuReductionTo = new SkuReductionTo();
                BeanUtils.copyProperties(item, skuReductionTo);
                skuReductionTo.setSkuId(skuId);
                if(skuReductionTo.getFullCount()>0 || skuReductionTo.getFullPrice().compareTo(new BigDecimal("0"))==1){
                    R r1=couponFeignService.saveSkuReduction(skuReductionTo);
                    if(r1.getCode()!=0){
                        log.error("远程保存sku优惠信息失败");
                    }
                }
            });
        }
    }

    /**
     * 保存Spu基本信息
     * @param spuInfoEntity
     */
    @Override
    public void savaBaseSpuInfo(SpuInfoEntity spuInfoEntity) {
        this.baseMapper.insert(spuInfoEntity);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {
        QueryWrapper<SpuInfoEntity> wrapper = new QueryWrapper<>();

        String key = (String) params.get("key");
        if(!StringUtils.isEmpty(key)){
            wrapper.and((w)->{
                w.eq("id",key).or().like("spu_name",key);
            });
        }
        // status=1 and (id=1 or spu_name like xxx)
        String status = (String) params.get("status");
        if(!StringUtils.isEmpty(status)){
            wrapper.eq("publish_status",status);
        }

        String brandId = (String) params.get("brandId");
        if(!StringUtils.isEmpty(brandId)&&!"0".equalsIgnoreCase(brandId)){
            wrapper.eq("brand_id",brandId);
        }

        String catelogId = (String) params.get("catelogId");
        if(!StringUtils.isEmpty(catelogId)&&!"0".equalsIgnoreCase(catelogId)){
            wrapper.eq("catalog_id",catelogId);
        }

        /**
         * status: 2
         * key:
         * brandId: 9
         * catelogId: 225
         */

        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                wrapper
        );

        return new PageUtils(page);
    }

    /**
     * 商品上架
     * @param spuId
     */
    @Override
    public void up(Long spuId) {
        //1.查到当前spu下对应的所有sku信息，品牌的名字。
        List<SkuInfoEntity> skus=skuInfoService.getSkusBySpuId(spuId);

        // TODO 4、查询当前sku的所有（可以被用来检索的）规格属性
        List<ProductAttrValueEntity> baseAttrs = attrValueService.baseAttrListforspu(spuId);
        List<Long> attrIds = baseAttrs.stream().map(attr -> {
            return attr.getAttrId();
        }).collect(Collectors.toList());

        //我们需要的id，现在要从baseAttrs中将其过滤出来
        List<Long> searchAttrIds=attrService.selectSearchByAttrIds(attrIds);
        HashSet<Long> idSet=new HashSet<>(searchAttrIds);
        //此时得到search_type==1的属性实体

        List<SkuEsModel.Attrs> attrsList = baseAttrs.stream().filter(item -> {
            return idSet.contains(item.getAttrId());
        }).map(item -> {
            SkuEsModel.Attrs attrs1 = new SkuEsModel.Attrs();
            BeanUtils.copyProperties(item, attrs1);
            return attrs1;
        }).collect(Collectors.toList());

        List<Long> skuIdList = skus.stream().map(SkuInfoEntity::getSkuId).collect(Collectors.toList());

        //TODO 1.远程调用库存系统查询是否有库存
        //如果远程调用失败，后期做断流，现在先try-catch
        Map<Long, Boolean> stackMap=null;
        try {
            R r = wareFeignService.getSkuHasStock(skuIdList);
            //做成map映射。一个skuId对应一个是否有库存
            TypeReference<List<SkuHasStockVo>> typeReference = new TypeReference<List<SkuHasStockVo>>() {};
            stackMap = r.getData(typeReference).stream()
                    .collect(Collectors.toMap(SkuHasStockVo::getSkuId, item -> item.getHasStock()));
        }catch (Exception e){
            log.error("库存服务查询异常：原因{}",e);
        }


        //2.封装每个sku的信息
        Map<Long, Boolean> finalStackMap = stackMap;
        List<SkuEsModel> upProducts = skus.stream().map(sku -> {
            //组装需要的数据
            SkuEsModel skuEsModel = new SkuEsModel();

            BeanUtils.copyProperties(sku, skuEsModel);
            //处理对拷不相同的属性
            skuEsModel.setSkuImg(sku.getSkuDefaultImg());
            skuEsModel.setSkuPrice(sku.getPrice());

            /**
             *     private Boolean hasStock;
             *     TODO 2.热度评分。0（带拓展不做）
             *     private Long hotScore;
             */
            //此举是为了处理，远程服务失败！
            if(finalStackMap ==null){
                skuEsModel.setHasStock(true);
            }else{
                skuEsModel.setHasStock(finalStackMap.get(sku.getSkuId()));
            }
            skuEsModel.setHotScore(0L);

            BrandEntity brand = brandService.getById(skuEsModel.getBrandId());
            skuEsModel.setBrandName(brand.getName());
            skuEsModel.setBrandImg(brand.getLogo());

            CategoryEntity catelog = categoryService.getById(skuEsModel.getCatalogId());
            skuEsModel.setCatalogName(catelog.getName());

            //更改esModel中检索属性。根据todo4查询的实体进行赋值
            skuEsModel.setAttrs(attrsList);

            return skuEsModel;
        }).collect(Collectors.toList());

        //TODO 5、将数据发送给es进行保存：gulimall-search
        R r = searchFeignService.productStatusUp(upProducts);
        if(r.getCode()==0){
            //远程调用成功 TODO 6. -》代表需要修改上架状态-》已修改
            baseMapper.updateSpuStatus(spuId, ProductConstant.StatusEnum.SPU_UP.getCode());
        }else{
            //远程调用失败
            //TODO 7、重复调用？接口幂等性
            /*
            * Feign的调用流程
            * 1、构造请求数据，将对象换位json
            * 2、发送请求进行执行（执行成功会解码相应数据）
            * 3、执行请求会有重试机制
            * */
        }
    }

    @Override
    public SpuInfoEntity getSpuInfoBySkuId(Long skuId) {
        SkuInfoEntity byId = skuInfoService.getById(skuId);
        Long spuId = byId.getSpuId();
        SpuInfoEntity spuInfoEntity = this.getById(spuId);
        return spuInfoEntity;
    }

}